Holder for pasteurizing milk, cream, and other liquids



Dec. 8, 1925- 1.564.962

F. W. KELLY ET AL HOLDER FOR PASTEURIZING MILK, CREAM, AND OTHER LIQUIDSFiled Jan. 27. 1923 2 Sheets-Sheet 1 INV NTOR.

A TTORNEYJ- Dec. 8, 1925- 1,564,962-

. F. w. KELLY ET AL HOLDER FOR PASTEURIZING MILK, CREAM, AND OTHERLIQUIDS Filed Jan. 27; 1923 2 Sheets-Sheet 2 A TTORNEYS.

I Patented Dec. 8, 1 925.-

IUNITEDSTATES P TENT ossce.)

FRANK w. KELLYANID ALEX LUEDICKE, or MILWAU EE, Wiscons n. f

HOLDER FOB PASTEURIZING MILK, CREAM, AND OTHER LIQUIDS; A

Application filed January 27, 1923. Serial No. 615,404.

To all whom it may concern:

Be it known that we, FRANK W. KELLY and ALEX H. LU'EDIGKE, citizens ofthe United States, and residents of l dilwaukee,

5 in the county of Milwaukee and State of Wisconsin, have invented newand useful Improvements in Holders for Pasteurizing Milk, Cream, andOther Liquids, of which the following is a description, reference'be- 0ing had to the accompanying drawings,

which are a part of this specification.

The invention relates to holders ortanks, and more particularly toholders for pasteurizing-milk, cream, and other liquids.

Heretofore, in pasteurizing milk and cream, the holders were formed inunits, each unit usually comprising from four to eight holders with butone set of valve operating mechanism for the unit.

system had its disadvantages in that the holders were necessarily limtedin size and also only a certain fixednumber of holders could be used ineach'unit. A further disadvantage was that no means was provided foradjusting the temperature in the individual holders.

It is one of the objects of the present invention to eliminate theabove-mentioned disadvantages by providing mechanism for holders whichwill permit the use of an unlimited number of holders and irrespectiveof the size of the holders.

A further object of the invention is to provide a plurality ofmechanically operated holders for pasteurizing liquids in which ea hholder is independent of the others.

A further object of the invention is to provide holders of the classdescribed which are lined with glass or porcelain, thereby making themsanitary and easy to clean.

A further object of the invention is to provide holders of the classdescribed which are each provided with heating and insulating jackets toadjust or maintain the temperature within the holders.

A further object of the invention'is to provide holders of the classdescribed having inlet and outlet pipes inloop form to permit a flow ofthe liquid in both directions at all times, thereby preventingstagnation of the liquid and consequent lowering of the temperature ofthe liquid inany part of the pipe.

A further object of the invention is to This ' provide holders of theclass described which 5 are welded and seamless in construction. p Afurther object of the invention is-to provide holders of the classdescribed which are of simple construction, are strong and durable, andare-well adapted for the'pur posedeseribed. V With the above and otherobjects in view,

the invention consists of the improved holders for pasteurizing: milk,cream and other'linquids, and 'their parts and combinations as set forthin the claims, and all. equivalents thereof.

In the accompanying drawing in which j the same reference charactersindicate the same parts in all of the viewsz, g I

' Fig. 1 is a plan view of the improved holders and mechanismforoperatinggthe Fig. 2 is a front view thereof, parts: being broken awayand parts being shown insec-v tion;and Fig. 8 is a cross sectional Viewof "cneof the holders illustrating an agitator and the" mechanismtherefor. l

Referring'now more particularlyto the drawings, the numeral 8frepresents aplurality of tanks or holders which are circular in crosssection and formed of-sheets of metal welded together so as to beseamless. The interiors of the holders are preferably .85 lined withglass or porcelain 8 to facilitate the cleaning'thereof, The. topport'ons of the holdersare provided withxman-holes 9 to permit access tothe interior of-the holders and said manholes are normally'closed bymeans of suitable covers 10. Theexterior and bottoms of the holders aresurrounded by heating andinsulating jackets, 11 spaced so as to leave achamber 12 between the same and the holder walls. Said chambers areadapted to have a vacuum created therein or to be filled with a fluid,as will be hereinafter explained, for the purpose of maintaining oradjusting the temperatures within the holders. i 7

The holders 8 are arranged in two .par-. allel rows and are convenientlyspaced from one another. Supports 18 are connectedto oppositev holdersand Ion-said supports two pairs of long tudinally extending channel 105iron beams 14 are secured. At various intervals on said beams, plates 15are posi T tioned which have thereon mechanism for 1 OPeratingthe holdervalves which will be more fully explained.

A motor 16 serves as the source of power, and it is in. connection withtiming gears 17 from which extends a connecting rod 18. The outerend ofsaid connecting rod is secured to a crank 19 which turns alngitudinallyextending crank shaft 20. Fixedly mounted on saidcrank shaft at variousintervals are valve operating cams, an inlet valve cam 21 and an outletvalve cam22 being seated on each of the plates and one pair of inlet andoutlet valve operating cams'being provided for each holder 'in'use. Saidcal is operate arms 23, and for briefness,-only the arms and.connectionsfor 1 one pair'of valves will be explainedin de- 7 they areconnected with the inlet nozzles 26' tail. A main supply pipe 2% leadsto the source of supply of the liquid with which the holders are to befilled (not'shown) and the same connects with the feed pipes 24: whichare in loop formation as shown in Fig. 1. It has been found to be veryadvantageous to have said feed pipes in'loop format-ion because theywill then permit a flow of the liquid in both directions and at alltimes and thereby prevent stagnation of the liquid and consequentlowering of the temperature of the liquid-in any part of the pipe.Branehpipes 25, which are very short in length, lead to each of theholders;v Here and in said nozzles inlet valves QY-are movablylocated.The outlet openings 28 are located preferably in the bottom portions ofthe holders, and pipes 29, in loop formation, lead to a container (notshown) which .is to receive the liquid after it hasbeen held in theholders.

As'a'ppears in Fig. 2, a valve seat 30 is adapted to receive the outletvalve 27, and

[valve is moved by means of a-valve rod 131 'Wl11Cll'.1S within theholder and extends 1011-- the opening will be closed thereby. -'Tl1egitudinally ofthe length thereof, projecting out of the top portion. Tosaid rod, acable 32 is attached which extends over pulleys 33 and'34secured in theceiling of the pasteurizing room. Theother end of thecable is made fast to an arm 23 so that when cam 22 forces the arm 23down, the valve 27 will be lifted, while when the arm isup, the valvewill be closed. between seats 15 and arms 23 to normally urge said armsto a raised position. In regard to the inlet valves, the construction isexactly the same,'there being a cable connection fro-m the valve rod tothe inlet'valve arm.

Each holder is surrounded by a circular pipe 35 and said pipes haveconnected thereto a plurality of spaced pipe connections 36 whichcommunicate with the chambers 12.

Connecting pipes 37 lead from the circular plpes to a longitudinallyextending. main Springs 23 are interposed supply pipe 38, one end ofwhich extendsto a pump or tank (not shown) and'the other end is plugged,as at 39, and an additional pipe may be attached thereto, if desired, to

feed chambers in additional holders. The

is forced through pipe 38 and the connecting pipes and from the variouspipe con 'nections into the chambers. It should be noticed, that thepipeconnections are designed to throw the fluid directly against the surfaceof the tank. In that way, the tank is heatedand it is not necessary tohave the entire chamber filled with the fluid.

For the purposeof circulating and'mixing the liquids in the holders,agitators 10 are provided. Said agitators are of the pro peller type andare fixedly carried on shafts 41 which are rotatably mounted in a bearing 42 in the interior of the holders, near the bottoms thereof. Theshafts project through the holders and outwardly therefrom and theirouter extremities have keyed thereto pulley wheels 43. Said pulleywheels are connected by belts 4 1- with a drive shaft 45 and are driventhereby.

The operation of the device, which isvery simple, is as follows: Themilk or other liquid, after being heated to the desired temperature,is'fed to the various holders through the pipes and connections. 'Astheoperation of the inlet cams is timed, the inlet valves will open inapredetermined sequence, the customary arrangement being for the holdersto fill, one after the other. The holders are maintained at thepa'steurizing,-or desired temperature by means 'of 'the vacuum or fluidfilled chambersand the milk is held in said holders fora-pproximatelythirty minutes, more or less, as "desired. Then, as the'milk has beenheld in each holder the predetermined period, the outlet cam of eachholder opens its valve and the pasteurized milk is exhausted from eachholder in the same sequence in which-it was fed.

It is obvious that more holders can easily be added. To do so, it ismerely necessary 'to extend the channel-iron beams and proelbow joints47 and extensionsareadded to the longitudinal members, after which pipeis replaced. Pipes 24 are then coupled With the additional holders bymeans of branch pipes. A reverse of the described operation Will permitholders to be removed.

Thus, it will be seen that the system jean be easily and quicklyenlarged or made smaller by a continuation or removal of some of theparts as shown.

From the foregoing description, it Will be seen that the improvedholders for pasteurizing milk, cream and other liquids are of verysimple construction, and are well adapted for the purpose described.

What is claimed as our invention is:

1. A past eurizing apparatus, comprising a plurality or tanks, and meansfor each tank operative to lill and empty each tank at predeterminedintervals and in a predetermined sequence, said means permitting theadding of additional tanks to the apparatus, said tanks being formed ofplates of metal connectel together so as to form a seamless.

Weld and lined with material which Will facilitate the cleansingthereof.

2. A pasteurizing apparatus, comprising one or more acketed tanks, andmeans for each tank operative to fill and empty each oredete minedsequence, said means permitting the adding otadditional tanks to the aaara us.

A pasteurizing apparatus, comprislng one or more jacketed tanks andmeans for each tank operative to fill and empty each iank at predetrmined intervals and in a predetermined sequence, said means permittingthe adding of additional tanks to the apparatus, and means for agitatingthe liquid held in said tanks.

4-. A pasteurlzing apparatus, comprlslng a plurality of tanks, and meansfor each tank operative to fill and empty each tank at predeterminedintervals and in a predetermined sequence, said apparatus being soarranged and constructed that additional tanks may be readily added toor removed from the apparatus. v r

A pasteurizing apparatus, comprising one or more tanks, timed means forfilling at predetermined intervals and in a.

each tank, timed means foremptying each tank, said means permitting theadding of additional tanks to the apparatus,- and an I agitator for theliquid Within each tank.

6. A pasteurizing apparatus, comprising one or more tanks, a camoperated intake valve for each tank, a cam operated outlet valve'foreach tank, said apparatus being 4 constructed so as to permit theincrease or decrease in the number of tanks used in the V apparatus, andan Within each tank. I q

7. A pasteuriz ng apparatus, comprislng one or more tanks, a camoperated intake agitator for the liquid valve for eachtank, a camoperated outlet 7 valve for each tank, means fortiming the movements ofthe valves of each tank, all of said means permitting the increasing orde-- creasing of the number of tanks used-in the apparatus, and anagitator for the liquid within each tank.

8. A pasteurizing apparatus, comprising one or'more seamless, Welded,metallic tanks,

a cam operated intake valve for each; tank, a cam operated outlet valvefor each tank, means for timing the movements of the valves of eachtank, and an agitator for the liquid Within each tank, said tanks beinglined with a material Which Will facilitate the cleansing thereof, andsaid entire appa and in close connection with said feed pipes,

means for each tank to operate said inlet valves and fill each tank atpredetermined intervals in a predetermined sequence, and

neans for each tank operative to empty each tank at predeterminedintervals and in a preeetermined sequence, all of said means permittingthe adding of additional tanks to the apparatus.

Iii-testimony whereof, We affi'x our signas tures.

F RANK W. KELLY. ALEX H. LUEDICKE.

